Durable and Efficient Core Frame Assemblies
Sep 29, 2025
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Core Frame Assemblies Product Description

We manufacture high-quality CRGO Core Assemblies for Distribution and Power Transformers up to 8 MVA. Our assemblies are tested for no-load losses, carefully packed, and ready for LV and HV coil insertion, helping you save on labor costs and material wastage.
Key Features of Rectangle Transformer Lamination
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High-Quality Materials
Made from premium CRGO steel to maximize efficiency and longevity.
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No-Load Loss Testing
Each assembly is tested with advanced power analysis to ensure minimal energy losses.
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Well-Designed Structure
–Built for durability and reliability in transformer applications.
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Ready-to-Use Assemblies
Pre-assembled for easy installation, reducing labor time and effort.
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Mitered Lamination Core Assemblies
Designed for transformers up to 5 MVA to enhance efficiency and performance.
Core Frame Assemblies Application
GNEE Featured Products
Gnee provides premium iron cores to the world. Our cores can be selected in a wide range of materials, shapes, applications, manufacturing techniques, etc., to meet customers' diverse demands. Explore our wide product range now~
Manufacturing Process

1. Raw Material Sourcing

2. Slitting

3. Punching

4. Laminating

5. Core Forming

6. testing
GNEE EC
Founded in 2008 and located in Anyang in China, Gnee Electric is a high-tech enterprise specializing in researching and manufacturing iron core products.
The company currently occupies over 20,000 square meters and employs more than 200 people, including over 80 professionals. After more than 18 years of development, we have built our own magnetic material production base and independently develope, produce, and sell various kinds of iron cores. The common types include silicon steel cores, motor cores, transformer cores, toroidal iron cores, special-shaped cores, custom cores, and others. Our cores are widely applied in different sectors including transformers, motors, mutual inductors, voltage stabilizers, welding machines, magnetic amplifiers, and instrumentation, providing diverse core solutions to global customers.

30+
Types of Products
18k+
Happy Clients
Why Choose GNEE EC?
GNEE EC was founded in 2008, which is a National High-tech Enterprise & Famous Brand Enterprise in China, developing into a professional manufacturer and supplier of high-quality iron cores.
18+
Over 18 years of success in the iron core industry;
National High-tech Enterprise & Famous Brand Enterprises in China;
200+
Over 200 employees;
The R&D team has more than 80 experienced engineers and the production team has more than 100 skilled staffs;
35+
Annual turnover up to 35 million dollor per year;
Owns many sets of highly automatic winding, annealing, and assembling machines;
1,000+
Over 1000 customers in domestic and overseas markets;
core Products are exported to more than 70 countries in the world;
Gnee Iron Core Factory Overview






Meet Our Sales Manager
"The Core of the Iron Core, the Power of Leadership" - See Our Great Decision-Makers Deeply Engaged in the Magnetic Materials Industry.

Edison Zhang
CEO

Kelly Zhang
General Manager

Alex Cao
Sales Manager
Industries Served

Automobile Industry

New Energy


Transformer Applications

Our Mission
Strive To Create world-class Iron core brand
With 18 Years of industry experience, we focus on the research, development, and manufacturing of high-quality iron cores for electricity, industrial control, new energy, and automotive markets











